Patents by Inventor Per-Ole Nordli

Per-Ole Nordli has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Device for punching hole in cards
    Patent number: 4596359
    Abstract: A punching device for punching coded key cards and the like comprising a plurality of punches, each of which is selectively movable in respective guide. Balls of ferromagnetic material are positionable in a first punching position and a second passive position. Solenoids with movable cores are arranged to selectively move the balls between the first and second positions.
    Type: Grant
    Filed: May 29, 1985
    Date of Patent: June 24, 1986
    Assignee: Trioving A/S
    Inventor: Per-Ole Nordli